colin/u-boot
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge branch 'u-boot-imx/master' into 'u-boot-arm/master'

Browse Source
This commit is contained in:
Albert ARIBAUD
2013-06-28 17:51:13 +02:00
parent 9dc8fef258 d6c6d127c5
commit e6c7f86f03
22 changed files with 1776 additions and 106 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
doc/README.m28
View File

@@ -1,13 +0,0 @@
DENX M28EVK
===========
Files of the M28/M28EVK port
----------------------------
arch/arm/cpu/arm926ejs/mxs/ - The CPU support code for the Freescale i.MX28
arch/arm/include/asm/arch-mxs/ - Header files for the Freescale i.MX28
board/denx/m28evk/ - M28EVK board specific files
include/configs/m28evk.h - M28EVK configuration file
Follow the instructions from doc/README.mx28_common to generate a bootable SD
card or to boot from NAND flash.

75
doc/README.mx28_common
View File

@@ -1,12 +1,15 @@
Booting U-boot on a MX28 processor
==================================
Booting U-boot on a MXS processor
=================================
This document describes the MX28 U-Boot port. This document mostly
covers topics related to making the module/board bootable.
This document describes the MXS U-Boot port. This document mostly covers topics
related to making the module/board bootable.
Terminology
-----------
The term "MXS" refers to a family of Freescale SoCs that is composed by MX23
and MX28.
The dollar symbol ($) introduces a snipped of shell code. This shall be typed
into the unix command prompt in U-Boot source code root directory.
@@ -17,16 +20,16 @@ Contents
--------
1) Prerequisites
2) Compiling U-Boot for a MX28 based board
3) Installation of U-Boot for a MX28 based board to SD card
4) Installation of U-Boot into NAND flash
2) Compiling U-Boot for a MXS based board
3) Installation of U-Boot for a MXS based board to SD card
4) Installation of U-Boot into NAND flash on a MX28 based board
1) Prerequisites
----------------
To make a MX28 based board bootable, some tools are necessary. The first one
is the "elftosb" tool distributed by Freescale Semiconductor. The other one
is the "mxsboot" tool found in U-Boot source tree.
To make a MXS based board bootable, some tools are necessary. The first one is
the "elftosb" tool distributed by Freescale Semiconductor. The other one is the
"mxsboot" tool found in U-Boot source tree.
Firstly, obtain the elftosb archive from the following location:
@@ -60,18 +63,18 @@ copy the binary by hand:
Make sure the "elftosb" binary can be found in your $PATH, in this case this
means "/usr/local/bin/" has to be in your $PATH.
2) Compiling U-Boot for a MX28 based board
2) Compiling U-Boot for a MXS based board
-------------------------------------------
Compiling the U-Boot for a MX28 board is straightforward and done as compiling U-Boot
for any other ARM device. For cross-compiler setup, please refer to ELDK5.0
documentation. First, clean up the source code:
Compiling the U-Boot for a MXS board is straightforward and done as compiling
U-Boot for any other ARM device. For cross-compiler setup, please refer to
ELDK5.0 documentation. First, clean up the source code:
$ make mrproper
Next, configure U-Boot for a MX28 based board
Next, configure U-Boot for a MXS based board
$ make <mx28_based_board_name>_config
$ make <mxs_based_board_name>_config
Examples:
@@ -83,8 +86,16 @@ Examples:
$ make mx28evk_config
3. For building U-boot for Freescale MX23EVK board:
$ make mx23evk_config
4. For building U-boot for Olimex MX23 Olinuxino board:
$ make mx23_olinuxino_config
Lastly, compile U-Boot and prepare a "BootStream". The "BootStream" is a special
type of file, which the i.MX28 CPU can boot. This is handled by the following
type of file, which MXS CPUs can boot. This is handled by the following
command:
$ make u-boot.sb
@@ -96,18 +107,16 @@ The code produces "u-boot.sb" file. This file needs to be augmented with a
proper header to allow successful boot from SD or NAND. Adding the header is
discussed in the following chapters.
3) Installation of U-Boot for a MX28 based board to SD card
-----------------------------------------------------------
3) Installation of U-Boot for a MXS based board to SD card
----------------------------------------------------------
To boot a MX28 based board from SD, set the boot mode DIP switches according
to i.MX28 manual chapter 12.2.1 (Table 12-2), PORT=SSP0, SD/MMC master on
SSP0, 3.3V.
To boot a MXS based board from SD, set the boot mode DIP switches according to
to MX28 manual, section 12.2.1 (Table 12-2) or MX23 manual, section 35.1.2
(Table 35-3).
An SD card the i.MX28 CPU can use to boot U-Boot must contain a DOS partition
table, which in turn carries a partition of special type and which contains a
special header. The rest of partitions in the DOS partition table can be used
by the user.
The SD card used to boot U-Boot must contain a DOS partition table, which in
turn carries a partition of special type and which contains a special header.
The rest of partitions in the DOS partition table can be used by the user.
To prepare such partition, use your favourite partitioning tool. The partition
must have the following parameters:
@@ -141,17 +150,17 @@ case, we assume the first partition of the SD card is /dev/mmcblk0p1:
$ dd if=u-boot.sd of=/dev/mmcblk0p1
Last step is to insert the card into MX28 based board and boot.
Last step is to insert the card into the MXS based board and boot.
NOTE: If the user needs to adjust the start sector, the "mxsboot" tool contains
a "-p" switch for that purpose. The "-p" switch takes the sector number as
an argument.
4) Installation of U-Boot into NAND flash
-----------------------------------------
4) Installation of U-Boot into NAND flash on a MX28 based board
---------------------------------------------------------------
To boot a MX28 based board from NAND, set the boot mode DIP switches according to i.MX28
manual chapter 12.2.1 (Table 12-2), PORT=GPMI, NAND 1.8 V.
To boot a MX28 based board from NAND, set the boot mode DIP switches according
to MX28 manual section 12.2.1 (Table 12-2), PORT=GPMI, NAND 1.8 V.
There are two possibilities when preparing an image writable to NAND flash.
@@ -214,7 +223,7 @@ There are two possibilities when preparing an image writable to NAND flash.
--------------------------------------------
There is a slight possibility of the user wanting to adjust the
STRIDE and COUNT options of the NAND boot. For description of these,
see i.MX28 manual section 12.12.1.2 and 12.12.1.3.
see MX28 manual section 12.12.1.2 and 12.12.1.3.
The update scripts take this possibility into account. In case the
user changes STRIDE by blowing fuses, the user also has to change

47
doc/README.mx28evk
View File

@@ -1,47 +0,0 @@
FREESCALE MX28EVK
==================
Supported hardware: only MX28EVK rev D is supported in U-boot.
Files of the MX28EVK port
--------------------------
arch/arm/cpu/arm926ejs/mxs/ - The CPU support code for the Freescale i.MX28
arch/arm/include/asm/arch-mxs/ - Header files for the Freescale i.MX28
board/freescale/mx28evk/ - MX28EVK board specific files
include/configs/mx28evk.h - MX28EVK configuration file
Jumper configuration
---------------------
To boot MX28EVK from an SD card, set the boot mode DIP switches as:
* Boot Mode Select: 1 0 0 1 (Boot from SD card Slot 0 - U42)
* JTAG PSWITCH RESET: To the right (reset disabled)
* Battery Source: Down
* Wall 5V: Up
* VDD 5V: To the left (off)
* Hold Button: Down (off)
Environment Storage
-------------------
There are two targets for mx28evk:
"make mx28evk_config" - store enviroment variables into MMC
or
"make mx28evk_nand_config" - store enviroment variables into NAND flash
Choose the target accordingly.
Note: The mx28evk board does not come with a NAND flash populated from the
factory. It comes with an empty slot (U23), which allows the insertion of a
48-pin TSOP flash device.
Follow the instructions from doc/README.mx28_common to generate a bootable SD
card.
Insert the SD card in slot 0, power up the board and U-boot will boot.